D-Link DFL-260-IPS-12 Product Manual - Page 284
Note: Outgoing calls do not need a specific rule
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6.2.9. The H.323 ALG Chapter 6. Security Mechanisms 2. Now enter: • Name: H323In • Action: Allow • Service: H323-Gatekeeper • Source Interface: lan • Destination Interface: dmz • Source Network: lannet • Destination Network: ip-gatekeeper (IP address of the gatekeeper) • Comment: Allow incoming communication with the Gatekeeper 3. Click OK Note: Outgoing calls do not need a specific rule There is no need to specify a specific rule for outgoing calls. NetDefendOS monitors the communication between "external" phones and the Gatekeeper to make sure that it is possible for internal phones to call the external phones that are registered with the gatekeeper. Example 6.9. H.323 with Gatekeeper and two NetDefend Firewalls This scenario is quite similar to scenario 3, with the difference that the NetDefend Firewall is protecting the "external" phones. The NetDefend Firewall with the Gatekeeper connected to the DMZ should be configured exactly as in scenario 3. The other NetDefend Firewall should be configured as below. The rules need to be added to the rule listings, and it should be make sure there are no rules disallowing or allowing the same kind of ports/traffic before these rules. Web Interface 1. Go to Rules > IP Rules > Add > IPRule 284